Method of producing brake-beam fulcrums.



F. J. SCHROEDERT METHOD OF PRODUCING BRAKE BEAM FULCRUMS.

APPLICATION FILED JULY.30. I914. r

Patented Nov. 23, 1915.

3 SHEETS SHEET l- F. J. SCHROEDER. 'METHOD OF PRODUCING BRAKE BEAM FULCRUMS. APPLICATION FILED JULY 30. 1914.

1,161,737. I Patented Nov. 23, 1915. i

3 SHEETSSHEET a.

FREDERICK J. SCHRGEDER, OF CLEVEZAND, OHIO, ASSIGNOR TO THE DAMASCUS BRAKE BEAM ('30., OF CLEVELAND, 01-11%, A GORPORATIGN OF OHIO.

ZVZETHGD 0E PRQDUQING BRAKEPBEAEI EULGI'LUIYXS.

specification of Letters Eatent.

Patented l fov, i2; 1915.

Application filed July 30, 1914. Serial 110. 854,151.

To 11/! HFwm it may worms-2.:

e it known that I. FREDERICK J. Sermonnizn, acitizen of the l'uited States of America. residing at Cleveland. in the ronnt v of ('uvahog'a and State of ()hio. have invented eertain new and useful Improvements in Meth ds of Producing Brake-Benin l ul- .gruins. of which the it'olhnvinjl is a spe :ifi ozi iion.

El invention relates. to fulerun'isi'or trussed rake beams and particularly to the class of such l'ulorunis called forged fuleruins. which are made by shaping up n eonniarati\elv light bar or bars of rolled steel stock, Such a fulcrum is used by inli'inllli'lllfi it in position to serve. as a sirut helm-en the e nipression and tension nienrbers of lhe brake beam. it is reipiir d to have a pair of arms spaced apart to leave a slot betn'een'theni for the reception of :1 brain leverand transverse hearings to reeeive a pin which passes through the arms and the hralie lever in pivot-all mounting the lever upon the fulcrum. it must also have suilahle hearings at its respe tive ends to receive the compression and tension menu hers. The slot usually required to be in u plane inclined to the. vertical and to the plane :1 th enipression and tension nieni hers lzlt'b add somewhat to the eonipliealion of shaping up the luleruin and r nders purtieularly dillii-ult. the provisi iin ol Hie tension mem er hearing" at the outer nd. \vhirn required to be in the form a sent to seep the tension mem er agninst transerse displaeeuient under the "treinuai; eoninns oi vi ation and jarring to \i'h 'h luahe henm is Sllbjppi'iti in list.

it l: u een proposed to form n pert ul' ihe tension neinber b aring upon each of the arms ad seeure the. anus 'hrL'el'ln-q' h v a olt or ri etnt some poinl :uljaeenl lo the innil'lll hul. this has not been Wholb sratisi'netorrv beifnuse oi' the. linbiliij. ol the boil or rivet to br ak and perinil ill" ends niraled. uhich in turn results in destrneti oi ihe break beam and I'nilure of the bralie; and partly because in modern pract ce. the length of slot requiredier swinging of the brake lever takes up so inueh oi the availnble space l. etvveen the compression and tension member hearings of the fulcrum as to render very undesirable, if not. very Llillicnlt, the use of any eonneeting means near the tension member bearin Moreover, the plane of the tension member hearing so far approaches the plane of the slot as to develop a considerable tendency to separate "the Walls 01" the slot and thus odd to the insecurity of the riveted type of tension member hearing.

"The object or the present invention is to develop from the rolled steel stock and upon me outer end of a slotted brake beam ful eruui oi the forged type, a solid. bloel-:-li"e tension ineniber hearing integrally united with the outer ends of the two arms, shaped to provide the reentrant seat or depression and ailording a substantial and solid bridge between them. \vhieh. nohvithstanding the approaeh ol the plane of the tension memher to the plane of the slot. will resist all, lendenelv to split the brake l'uleruni and, nilhal. render permanent and note what; is ordinarily a very vulnera le part of the trussed brake beam structure.

4 .weordine' to the preferred method or pro eedure. the outer end of thefulcrum is sub' ies-led to pressure in the direction of one f its dimensions while being confined in lho dirertiun oi the other dimension. so that the. me .l art-nonwhites in a solid bl ek-like bod) in gral with oth arms oi the fulcrum, -Hllllll;I a positi n nhirh adapts it to bridg l r -1n one corner to the diagonally opposite rorner. and thus d liver a direct thrust upon the two arms of the fulcrum and liming lbe met-1d :Iathered in from the olhrr inn dingoindlv opposite etu'ners. so as to provide solid and su stantial. side Milli; to the seal; oi the tensi n member. The di ni the r-'(." l will. of eonrse. depend upon the F 'ih ll oi the lension member hirh it is to rel-rive. in the illustration 'elerl -l. the sent i ndnpted for a tension member of round rlion.

lmi'erulsly. this shaping. up 01' the outer .llll oi th fulcrum lanh is accomplished in a swelled h ading ninehinin carrying a d e nhi .s' lorre l against the end of the l lll'lllli hal sai end e nlinedin a suita le inn and the an i the hilt-ruin in rear of the port to be eonsuined in the shopin; operal'ni being; lirinlv gripped and backed up between elainping' dies; the endxvise. pressure being snllieient to forge the end into a single integral nmss, shaped to eonline the tension member on the end of the fulcrum. and solid and substantial enough to transmitthrust equally between searing end with which they are thus pro- ,ided. This methodQof procedure is not ly-v'ery effective in results, but is particu-- l rl y advantageousin that it insures such results; even though. the two arms .of' the may originally be separate pieces presented to the heading machine without any preliminary with hese preliminary.

ortions of thefi-fulcru'm ,members a.= first step of the operation, The fol; ing fi'gures show the dies for forming tlidsbiidfidt 1'5'on the fulcrum. Fig. 5 'is a ti'finsyerseseotional tfiview on the line 5--5-' Fi "B-f"tli1i5i1gh theg male and female dies an 1 toward: the left; Fig. 6- is' -'atrans ijiirshseotion on the line 6-45 looking figure thestockf is shown as shoved back and the cavity 13 filled all but the. outward corners. Further continued forward movetowafild'fthe rightfandwith thestoolsre mo'v' ,Fig isa longitudinal S ctional 'yieit "fthe'dies with stock inepositionythe male it beingshoWn inth'e act of ingin'tocontact with the stock; Q .k8-is awiew similar to Fig. 7 s awls slight progressive movement .of they male die the stock being forced back bythe-nialefdie beginning to fill. the cavityiii-the -female die. Fig. 9 is a .viiew similar to Fig] showing'a still further .pro'gressiye movement of the male die,

is shoved into similar tojFig 7' showing the ltnhle, did in the final position'at the ehd of tll'e fq tward movement, according-to whichfa set has been formed and the stock. hasfillerdthe cavity completely and there being slightly more 'stbck than is necessary tofill the cavity, a' perfct'weld has been made means of the pressmie'exerted on the male die. v

*The reference numerals 1 and'2 designate ari'ns of members constituting the fulcrum in'Figs: 1, 2, '3 and 4, excepting that the head providing the seat 14 has'not yet been formed, this end at this time having the shape illustratedin Fig. 7, with the two ends 11 and 1? brought close together and parallel. After the two pieces 1 and 2 are twisted, bent and punched, they are suite g forging, together or other, .10 means'iof uniting themaf, V I -observatiox s re-- m eisg the essential featane's of the lIlVeIh bers are thus secured together "they are .Elaced in a furnace andthe ends ll, 12"- In'g drawmg Figure 1 1 is aside ole--- f f a strut or fulcrum;embodying'my Fig. 2- is a'top'gplan view of the {.3 and 4 are-detail views showgul'ar relation betweenthebody Q nally pro3ecting nose l0.'then travels forco e.

c'cordin'g to which the stock-1 i, and fills all but the-outer". corners-of the cavity. Fig, .10 is a view The 'rela-tiv y to the! arms 1,, 2, (see Fig. 3) folmembers 1 and 2 are in the illiistrative instance made from two pieces tht together pieces in the dies in which they are to be operated upon. After the memeated to a welding heat after which the body-oncentral portions are placed in the particular embodiment sefeaed for purposes .15 of illustration,

ward' by a suitable mechanism a d ,forces thel'ends 11 and 12 of the stock ackward, whereby the ends of the stck' begin to fill 'the rear end ofthe cavity 13 as shown in Fig. 8. The male die continuing to inove forwai'jdly' forces the ends of the stock apart forming a seat as shown in Fig.9, in which ment of the male die forces thia' metal of the ends of the stock to completely fill the cavityj13 as own lD' Flg. 10 in whichfi re thefmaleldiia isv shown in-itg final pdsitio n at the end-of its forward .movement. The stock'ha's completelygfilled the cavity and the seat *14 has been nished,;a1}d' there be ing slightly more stock than necessary to fillthe' eavityl3/alperfect w/eld has been, 4105 made between the ends of the stock by-means 0f: the pressure exerted by. the male die. By this methodI form on the'lower fiends of the; fulcrum members La (1 '2, a tension member seat: 14 which exte ds transversely .ofithe'ful c rum member, the walls 15 of the seat being integral with the seat and with the mmbersl'and 2=- 'vious twisting/of the ends 11, 12,

lowed by the forging and solidifying of the ends, has the further advanta e that the finished head with; thegiseat l is placed 3 diagonally 'overthe' arms or members 1 and 2, or in other words, that; for instance, the end 11 forming one side of the head, and being a part of member 1, has'now been twisted -and firmly joined, not only to the is transmitted to and sustained by both arms or members 1 and 2. The advantage of this is-obvious-:ovei brake fulcrums in which the slot has been bridged over, and in which the pressure is taken up over the space between the members, whereas in the present case, such pressure is taken up di rcctly over the two fulcrum members.

By Welding the outer ends of the fulcrum members as described and shown i overcome all tendency of the tension member to split the fulcrum.

I claim 1. The improvement in the art of forming seats upon the ends of the slotted struts of t-russed brake beams; which consists in providi a fulcrum blank having spaced lonflllllt'linfrl arias, confining said blank in dies iing an opening to receive the end of the blank to be operated upon, upsetting the end of said blank while at a welding heat, and forming the same into a solid block, bridging the space between said arms, whereby thrust 'Will be transmitted in the longitudinal direction of the arms only.

The improvement in the art of proucing slot-ted fulcrums for trusset brake ins, which consists in preparing a tultruin-hlanlt having arms spaced for providi a slot between them, and then, wlile at a Welding heat, confining an end of said blank, embodying portions of said arms, in a mold having a cavity corresponding to the external lines of the hearing head to be formed and subjecting the confined portion of the blank to the action of a pressing die constructed to form a seat, and thereby welding the confined portions of the arms into a solid block integral with and longi' tiulinally superimposed upon the two arms and bridging the slot between them.

51. The. improvement in the art of producing slotted tulcrunis tor trussed brakeboanis, which consists 'n preparing a tulrruni-lilank having arms spaced lor providin; :lltWi slot between them. and then, while at a welding heat, confining an end of said blank embodying portions of said arms, lTl a mold having a cavity oi substantially rectangular section and subjecting the (Hillllltkl portions ol' the blank to the action of a pressing die having a seat-forming: projection positioned to extend diagonally from one arm to the other, and thereby Welding the confined portions of the arms into solid block integral with and longitudinally superimposed upon the two arms and bridging the slot between them.

r. The improvement in the art of producing slotted fulcrunis for trussed brakebeams and with i31llSSl]1Q1l1l)Q1 bearing heads, which consists in providing a fulcrum blank with substantially rectangular parallel arms having between them a space to form a fulcrum slot, introi-lucing an end of said blank embodying portions oi said arms, into a mold having confining \valls contornr i-ng substantially to the section of the head to be formed, and while said portion of the blank at Welding heat, subjecting said end of the blank to pressure which welds to gether portions of the arms extending ill-i \vardly from the and ot the blank and leaves an integral bearing head, in position to bridge the fulcrum slot and' lic longitudinall superimposed upon the spaced arms of the blank.

The improvement in the art of producing forged it'ulcrums for trussed bralwbeams and having; truss-member bearing heads which consists in providing a blank having parallel arms of substantially rectangular section spaced apart to provide a fulcrum slot between them, and having the end of the blank torsionally dellccted to displace the metal of each arm across'the slot into position in line with the other arm, then while said deflected end of the blank is at welding heat, introducing it into a mold conforming to the external form of the head to be produced, and subjecting it to longitudinal pressure under a die having; a' seatforming projection and until the end of the blank is reduced to a solid block bridging the slot'betiv en the arms. and integral with and longitudinally superimposed upon the said arms.

The foregoing specification signed at Cleveland, Ohio, this 9th day of July, 1915.

FREDERICK J. SCIIROEDER. in presence of C. E. Mayan,

C. R. \Vaonnn. 

